<template>
  <div class="person">
    <h1>中国</h1>
    <h2 ref="title2">北京</h2>
    <h3>尚硅谷</h3>
    <button @click="showLog">showLog</button>
  </div>
</template>

<script lang="ts" setup name="Person">
import { ref, defineExpose } from "vue";

// 创建 title2 用于存储 ref 标记的d
let title2 = ref();
let a = ref(0);
let b = ref(1);
let c = ref(2);

function showLog() {
  console.log(title2.value);
}

// 暴露属性
defineExpose({ a, b, c });
</script>

<style scoped>
.person {
  background-color: skyblue;
  box-shadow: 0 0 10px;
  border-radius: 10px;
  padding: 20px;
}
button {
  margin: 0 5px;
}
</style>
